마시모 코퍼레이션
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionUs Bancorp \de\
Latest Disclosed Ownership3,933 shares
Latest Disclosed Value $ 699,562
Us Bancorp \de\ reports 4.49% increase in ownership of MASI / Masimo Corporation

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 3,933 shares of Masimo Corporation (MX:MASI) valued at $699,562 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 3,764 shares of Masimo Corporation. This represents a change in shares of 4.49% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F MASIMO COM 574795100 3,933 169 4.49 700 42.94 0.0003
2026-01-30 2025-12-31 13F MASIMO COM 574795100 3,764 0 0.00 490 -11.89 0.0006
2025-11-12 2025-09-30 13F MASIMO COM 574795100 3,764 -406 -9.74 555 -20.83 0.0007
2025-07-24 2025-06-30 13F MASIMO COM 574795100 4,170 -156 -3.61 701 -2.64 0.0009
2025-05-08 2025-03-31 13F MASIMO COM 574795100 4,326 46 1.07 721 1.84 0.0010
2025-02-05 2024-12-31 13F MASIMO COM 574795100 4,280 -90 -2.06 707 21.48 0.0009
2024-10-28 2024-09-30 13F MASIMO COM 574795100 4,370 -101 -2.26 583 3.37 0.0007
2024-08-07 2024-06-30 13F MASIMO COM 574795100 4,471 -194 -4.16 563 -17.81 0.0008
2024-05-08 2024-03-31 13F MASIMO COM 574795100 4,665 -2,664 -36.35 685 -20.26 0.0010
2024-02-09 2023-12-31 13F MASIMO COM 574795100 7,329 22 0.30 859 34.22 0.0013
2023-11-03 2023-09-30 13F MASIMO COM 574795100 7,307 35 0.48 641 -46.49 0.0010
2023-08-10 2023-06-30 13F MASIMO COM 574795100 7,272 -701 -8.79 1,197 -18.69 0.0019
2023-05-09 2023-03-31 13F MASIMO COMMON STOCK 574795100 7,973 350 4.59 1,471 30.52 0.0025
2023-02-13 2022-12-31 13F MASIMO COMMON STOCK 574795100 7,623 -916 -10.73 1,128 -6.55 0.0020
2022-10-27 2022-09-30 13F MASIMO COMMON STOCK 574795100 8,539 4,083 91.63 1,206 106.86 0.0025
2022-08-01 2022-06-30 13F MASIMO COMMON STOCK 574795100 4,456 680 18.01 583 6.19 0.0011
2022-05-11 2022-03-31 13F MASIMO COMMON STOCK 574795100 3,776 -487 -11.42 549 -56.01 0.0009
2022-02-11 2021-12-31 13F MASIMO COMMON STOCK 574795100 4,263 51 1.21 1,248 9.47 0.0020
2021-11-10 2021-09-30 13F MASIMO COMMON STOCK 574795100 4,212 -248 -5.56 1,140 5.36 0.0021
2021-08-05 2021-06-30 13F MASIMO COMMON STOCK 574795100 4,460 -336 -7.01 1,082 -1.73 0.0020
2021-04-28 2021-03-31 13F MASIMO COMMON STOCK 574795100 4,796 910 23.42 1,101 5.66 0.0022
2021-02-04 2020-12-31 13F MASIMO COMMON STOCK 574795100 3,886 137 3.65 1,042 17.61 0.0022
2020-11-10 2020-09-30 13F MASIMO COMMON STOCK 574795100 3,749 144 3.99 886 7.79 0.0022
2020-08-07 2020-06-30 13F MASIMO COMMON STOCK 574795100 3,605 -15 -0.41 822 28.24 0.0022
2020-05-13 2020-03-31 13F MASIMO COMMON STOCK 574795100 3,620 31 0.86 641 12.85 0.0020
2020-02-04 2019-12-31 13F MASIMO COMMON STOCK 574795100 3,589 -94 -2.55 568 3.65 0.0015
2019-11-08 2019-09-30 13F MASIMO COMMON STOCK 574795100 3,683 2,112 134.44 548 134.19 0.0015
2019-08-13 2019-06-30 13F MASIMO COMMON STOCK 574795100 1,571 -27 -1.69 234 5.88 0.0007
2019-05-08 2019-03-31 13F MASIMO COMMON STOCK 574795100 1,598 -220 -12.10 221 12.76 0.0006
2019-02-13 2018-12-31 13F MASIMO COMMON STOCK 574795100 1,818 -104 -5.41 196 -17.99 0.0006
2018-10-31 2018-09-30 13F MASIMO COMMON STOCK 574795100 1,922 -58 -2.93 239 23.83 0.0007
2018-08-08 2018-06-30 13F MASIMO COMMON STOCK 574795100 1,980 534 36.93 193 51.97 0.0006
2018-05-08 2018-03-31 13F MASIMO COMMON STOCK 574795100 1,446 59 4.25 127 8.55 0.0004
2018-02-02 2017-12-31 13F MASIMO COMMON STOCK 574795100 1,387 253 22.31 117 19.39 0.0004
2017-11-13 2017-09-30 13F MASIMO COMMON STOCK 574795100 1,134 172 17.88 98 12.64 0.0003
2017-07-19 2017-06-30 13F MASIMO COMMON STOCK 574795100 962 107 12.51 87 8.75 0.0003
2017-05-03 2017-03-31 13F MASIMO COMMON STOCK 574795100 855 751 722.12 80 1,042.86 0.0003
2017-02-08 2016-12-31 13F MASIMO COMMON STOCK 574795100 104 0 0.00 7 16.67 0.0000
2016-11-04 2016-09-30 13F MASIMO COMMON STOCK 574795100 104 0 0.00 6 20.00 0.0000
2016-08-10 2016-06-30 13F MASIMO COMMON STOCK 574795100 104 0 0.00 5 25.00 0.0000
2016-05-13 2016-03-31 13F MASIMO COMMON STOCK 574795100 104 41 65.08 4 33.33 0.0000
2016-02-10 2015-12-31 13F MASIMO COMMON STOCK 574795100 63 0 0.00 3 50.00 0.0000
2015-11-16 2015-09-30 13F MASIMO COMMON STOCK 574795100 63 -269 -81.02 2 -84.62 0.0000
2015-08-10 2015-06-30 13F MASIMO COMMON STOCK 574795100 332 0 0.00 13 18.18 0.0001
2015-05-08 2015-03-31 13F MASIMO COMMON STOCK 574795100 332 0 0.00 11 22.22 0.0000
2015-02-13 2014-12-31 13F MASIMO COMMON STOCK 574795100 332 135 68.53 9 125.00 0.0000
2014-11-14 2014-09-30 13F MASIMO COMMON STOCK 574795100 197 0 0.00 4 -20.00 0.0000
2014-08-14 2014-06-30 13F MASIMO COMMON STOCK 574795100 197 197 5 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.